Type-writer.



J. IVlcRAVEN.

TYPEWRITER.

APPLICATION FILED MAR. 17. 1914.

Patented June 22, 1915.

JOHN MORdVEN, 05 LITTLE 35:1.

it ill eir, Ann-see.

l l t1 TYPE-WRITER.

Miami.

Specification of Letters Patent.

Patented June 22, mm.

Application filed March 17, 1914. Serial No. 825,390.

T all whom it may concern:

Be it known that I, JOHN MGRAVEN, a citizen of the United States, and resident of Little Rock, Pulaski county, 'Arkansas, have invented certain new and useful Improvements in Type-Writers, of which the following is a specification containing a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to improvements in typewriters, and the primary object of my invention is to provide a curvilinear type bar having a socket in itsfree end arranged to receive a type, whereby the impacts incident to the printing will be received on a curved bar in order to obviate distortions of the type bar and upon a type having a solid bearing in the end of the type bar in order to obviate displacements of the type relative to the bar.

A further object of my invention is to construct a novel support for the bars .whereby each type bar of an arc-shaped group may be mounted upon a ball bearing.

With the above purposes in View my invention consists in certain novel features .of construction and arrangement of parts as will be hereinafter more fully described, pointed out in the claimand illustrated by the accompanying drawings, in which Figure 1 is a diagrammatical elevation of a type ba'r constructed according to my invention, showingthe arrangement of the type bar relative'to a platen and a key bearing lever; Fig. 2 is an edge view of one of my improved type bars; Fig. 3 is an enlarged edge view showing the free end of the type bar bearing and type; Fig. 4 is a sectional plan illustrating a groupof the hearing ends of my improved type bars, showing the wedge-shaped disks between the type bars; and Fig. 5 is a side elevation of one of said wedge-shaped disks.

Referring by numerals to the accompanying drawings:

6 designates the platen which in its specific construction forms no part of my invention.

7 designates the type journal which is of ordinary construction, and 8 designates a key-bearing lever which is of ordinary construction. While the journal 7 is of ordinary constructionI prefer that it be arranged beneath andout of vertical alinement with the longitudinal axis of the platen, as clearly shown in Fig. 1, so that the basket formed by the type bars will be normally beneath the platen to produce a visible writing machine. Arranged upon this journal 7 are the type bars ofmy improved construction each of which comprises a curvilinear arm or body 9 having in its free end a socket 10 arranged to receive the pin 11 of a type 12, and at its journal end the type bar is increased in thickness, and in each face of said thickened end of each type bar there is a circular ball race 13. Interposed between each pair of said journal ends of the type bars there is introduced a wedge shaped disk 14 having on each of its faces circular ball races 15, and which wedgeshaped disks are provided solely to form parallel bearings for the balls 16 between the type bars on a curved journal.

By providing a type bar having a curved body I obviate distortions of the body of the bar, due to strains incident to the printing impacts, and by. placing the type solidly at the end of the type bar I obviate all tend ency toward displacements of the type relative to the bar.

I claim:

In a typewriter, a curvilinear support, a plurality of type bars having disks at their ends which are journaled on said curvilinear support, a wedge shaped disk journaled on the support between each pair of the first mentioned disks, said disks each having an annular ball race in each of its side facesand balls interposed between each pair of disks, substantially as shown and for the purposes stated.

In testimony whereof, I have signed my name to this specification, in presence of two subscribing witnesses.

JOHN MGRAVEN.

Witnesses:

WM. F. Juno, Jr., J. B. Wnnsrnn. 

